Based on your updated requirements, here’s an updated version of the pwm_blue function that incorporates the button interrupt checks:
#include <stdint.h>#define TAxCCRn // Replace with the appropriate register for controlling the PWM duty cycle#define OUT // Replace with the appropriate bit position for controlling the LED output modeuint8_t check_and_clear_up_flag(void);uint8_t check_and_clear_low_flag(void);uint8_t check_and_clear_joy_flag(void);uint8_t pwm_blue(uint8_t duty) {if (duty < 5) {// Turn off the LED// Set output mode to 0 and set the bit OUT to 0return 0; // Return 0 to indicate success} else if (duty > 95) {// Turn on the LED// Set output mode to 0 and set the bit OUT to 1return 0; // Return 0 to indicate success} else if (duty >= 5 && duty <= 95) {// Compute number of counts for requested duty cycle percentageuint16_t counts = ((uint16_t)duty * MAX_COUNTS) / 100; // Adjust MAX_COUNTS according to your system// Write counts value to TAxCCRn register// Change output mode to 7return 0; // Return 0 to indicate success}// Duty cycle is out of range [0%,100%]// Turn off the LEDreturn 1; // Return 1 to indicate failure}int main() {uint8_t duty_cycle = DEFAULT_DUTY_CYCLE;while(1) {if(check_and_clear_up_flag()) {if(duty_cycle < 100) {duty_cycle++;}}if(check_and_clear_low_flag()) {if(duty_cycle > 0) {duty_cycle--;}}pwm_blue(duty_cycle);}return 0;}
In the main function, it continuously checks for button interrupts using the check_and_clear_up_flag() and check_and_clear_low_flag() functions (assuming they are properly implemented). If the upper button interrupt is triggered, it increases the duty cycle by one. If the lower button interrupt is triggered, it decreases the duty cycle by one. Then, it calls the pwm_blue function with the updated duty cycle to control the LED accordingly.
Remember to replace TAxCCRn and OUT with appropriate registers/bits for controlling your specific hardware setup. Also, make sure to define constants like MAX_COUNTS and DEFAULT_DUTY_CYCLE according to your system requirements.
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